1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6db1d2348af290ad4a95b0cd66ff28269bf7cad98909c7039b42620de5b70a2. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4e80cd1-48bc-4ff6-ae32-66acf507e147.json and https://artists.proofprofile.net/proofs/artist/d4e80cd1-48bc-4ff6-ae32-66acf507e147.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5262e3b34b0563bd951f98d3243cd7262d0313f8ec06c9f450bafbaa30bdef1b. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2559985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7841ac968498480db673e5b68ab58b78db3ad32cfebe56cdd8b7ad2430a88f2f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42546293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dbe80c8ebe906b71a76e53bc87531bffc821117521741e5218261bcc1fae53. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFM2570045.
Let Me Love You (Ariana x Adrian) [ShutUp x 9am in Calabasas]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74629b7c755fed1782fc63d1185297aff889fff703e1ae3718bacb51383efc51. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2585431.
Em Đây Chẳng Phải Thúy Kiều (prod. Stunna)
Em Đây Chẳng Phải Thúy Kiều - prod. Stunna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6360384dc1391ab947562b057e176a2735f46bd52c0d249c3155d19c43b3ef. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2582695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54faff84740792068308ba4acd5b5cb41be922101342379644bc13a1f36b1215. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2579639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734238df9866e994c4445cdca9d6611341075138d4a8866c1fadf3b7c3cfb558. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2582680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f8193d9370c413d686c7a95490d60e554e1f74092684a421346c0a69d03dba. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2582663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eb4178027e3dfc9f060224e87fad18c82a785b3e69aa2af26a8b26027a97fb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2579483.
iu một người có lẽ (prod young.drewis [jerk x jersey club remix])
iu một người có lẽ - prod young.drewis [jerk x jersey club remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6049287f7b2970df713469590fad4c441249ccd82ba974a611523b60c5ff4a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2582629.
Trai Tim Em Cung Biet Dau (truongnguyen remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535202dfec147b4716732a3046ef64300c4e519df2cf17fa21b35e6fce71e2bb. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2588200.
sao anh chưa về (prod young.drewis [jerk x jersey club remix])
sao anh chưa về - prod young.drewis [jerk x jersey club remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229e83860ea9ea4c265865d788ecfcaf8360fe957e7fb6f67fae52b71ee621ac. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2582631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccc7e2ed99446aa7c80ad96d924233898da6f2faa1a116ab2b77ba6dac53c18. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2585528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e38cfb47faf0a8fdc6a849b644169bc533b0bc18f9d737f4fdff82729c9d12a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7P2582639.